A knock-down or collapsible bar for serving beverages or food or the like and which has a front wall and side wall structures for supporting a counter. The front wall is comprised of two separate sections, and these two sections are hinged together and are also hinged to the sidewalls whereby the walls can be folded together in accordian fashion and in a very compact and relatively narrow package. Each of the walls is comprised of side rails and cross rails which form a generally rectangular frame structure in which flexible fabric-like panels are removably inserted. The counter is readily attached to and detached from the upper edge of the walls and an interior shelf is replacable and easily set within the walls so as to rigidify them and hold them in assembled relationship with the counter. Straps are detachably connected between the interior shelf and the sidewalls so as to further rigidify the structure when in assembled position. The entire structure can be readily disassembled and compactly folded in such a manner that the interior shelf nests in the underside of the counter and the walls when folded in accordian fashion form a dimensioned package that is generally the same as the container; the entire assembly can then be readily and compactly packaged in a box for storage or transport.